.case-banner {
  height: 650px;
  background: url(../img/banner5.jpg);
  background-repeat: no-repeat;
  background-position: center;
}

.case {
  padding: 145px 0 258px 0;
  overflow: hidden;
}
.case div {
  float: left;
  margin: 0 6px 6px 0;
  width: 295px;
  height: 295px;
}
.case div:nth-child(4n) {
  margin-right: 0;
}
.case div:hover {
  transform: scale(1.01)
}
